Improvement in grain-drills



UNITED STATES BENJAMIN KUHNs,

PATENT OFFICE.

OF DAYTON, OHIO.

IMPROVEMENT IN GRAIN-DRIL-LS.

Specification forming part of Letters Patent No. 111,853, dated February 14, 1871.

l1o all whom t may concern:

Be it known that I, BENJAMIN KUHNS, of Dayton, in the county of Montgomery, and inthe State of Ohio, have invented a new and useful Improvement in Grain-Drills; and I d0 hereby declare the following to be a full, clear, and exact description of the same, reference being had to the annexed drawing, making a part of this speci-lication, in which- Figure l is a bottom view of part of the frame of a grain-drill, together with the dragbars. Fig. 2 is a side elevation.

The same letters of reference, where employed in the several figures, denote identical parts.

This invention relates to that class of graindrills in which provision is made for arranging the hoes in single file or double file, as the nature of the soil may require, by attaching every alternate drag-bar the others being hinged permanently to the frame) to a crossbeam, which may be shifted to accomplish the objects above stated.

My improvement consists in connecting the shifting drag-bars to their beam by means of an intermediate link, which folds down upon said beam on throwing the drag-bars into double file, as will be more specifically pointed out in the following description and claim.

To enable those skilled in the art to make an d use my improvement, I will proceed to describe its construction and operation.

Of the drag bars A, which carry at the rear end the hoes or drills, through which the seed passes from the seedbox into the ground, every alternate one is hinged by a link, a., to a beam, B, the rest being pivoted at their forward ends to a permanent cross-bar, C, of the frame.

The beam B is rectangular in cross-section, and is provided with a journal, b, at each end, upon which it turns in bearings on the frame forward of the cross-bar C thereof. These journals are arranged eccentrically upon the ends of the beam, as shown, and one of them projects through its bearing 'to receive on its overhung end a worm-pinion, D, which gears into a worm-shaft, E. The latter has its bearing ou a bracket, E', fastened on the frame of the machine, and is to be provided with a crank or hand-wheel by which to operate it. The pivotalv point of these links of the shifting drag-bars is at the edge of the beam B farthest from its journals, and upon what is its under side when the hoes are in single le, as indicated in dotted lines in Fig. l. As the beam is swung ou its journals in the direction of the arrow in Fig. 2, the links fold down on its edge, permitting the drag-bars to maintain their horizontal position. V

It will be observed that by the employment of this folding link the required extent ot' movement can be given to the shifting dragbars by a beam of limited dimensions in crosssection.

The beam B is prevented from being turned more than a haiti-evolution or in awrong direction by a horizontal iiange, b', projecting from the frame above it at one end, and the worin-gearing will hold the beam and its dragbars and hoes in any position desired.

Having thus described myinventiomwhat I claim, and desire to secure by Letters Patent, 1s

The combination of the beam B, links a, and shifting drag-bars A, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

BENJAMIN KUHNS.

Witnesses:

J oHN Scorr, GEO. M. YOUNG. 

